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(No Model.) 2 Sheets-Sheet 1.

R. DU-RRIN & R. SHELDON. ATTACHMENT FOR TYPE WRITING MACHINES.

No. 424,187. Patented Mar. 25,1890.

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' ATTORNEY N4 PETERS. Mala-Lithographer. Wzshiughn, DV 0 I UNITED STATESPATENT OFFICE.

REUBEN DURRIN AND R OSEORANS SHELDON, OF STREATOR, ILLINOIS;

SAID DURRIN ASSIGNOR TO SAID SHELDON. V

ATTACHMENT FOR TYPE-WRITING MACHINES,

SPECIFICATION forming part of Letters Patent No. 424,187, dated March25, 1890.

Application filed March 6, 1889. $erial Nol 302,069. (No model.)

To aZZ whom, it may concern:

Be it known that we, REUBEN DURRIN and ROSECRANS SHELDON, both ofStreator, in the county of La Salle and State of Illinois, have lnventeda new and Improved Attachment for TypeJVriting Machines, of which thefollowing is a full, clear, and exact description.

\Vithcertain classes of type-writers the characters and keys are soarranged that a single key will print a number of characters, theposition of the characters being changed by means of shifting-keys thathave hereto fore been operated by hand; but in so shift-- the charactersone of the operators hands 1s necessarily employed to the exclusion ofthe printing operation, and consequently valuable time is wasted and theview of the keyboard obstructed.

The invention will be first described, and then specifically pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in both the views.

Figure 1 is a face view of a typewriter representing the same as itappears when provided with our improved attachment, the typewriter beingof the Hammond type; and Fig. 2 is a side View of the type-writer andattachment.

In the drawings, represents a type-writer of the Hammond type, saidtypewriter being mounted upon a stand 11, to the under side of whichstand there are hinged bell-crank levers 12 and 13 that are normallyheld in the position in which they are shown in the drawings by springs11 and 15. The horizontal arm of the lever 12 isconneoted to thecapital-shifting key 16 by a rod 17. The connection between thehorizontal arm of the lever 13 and the spacing-key 18 is established bymeans of a rod 19, at the lower end of which there is formed a loop a,that is entered bya pin 9%, carried by the lever, the arrangement beingsuch that as the lever is thrown in the direction of its arrowthespacing-key willbe drawn down, but, having been drawn down, the pinwill pass between the two inwardlybent sections 0 of the loop, thuspermitting the key to return to its normal position after having beenthrown to bring about the required spacing, whereby we provide for aslowreturn of the lever 13, it being understood that a movement of the kneecannot be brought about as rapidly as a movement of the hand.

In order that the figure-shiftin g key 20 may be thrown when desired, wemount a practically horizontal lever 21 beneath the table 11 and connectthis lever with the key- 20 by a rod 22 and a link 23, the outer end ofthe lever being pivotally connected by link 24 to a horizontal lever 25,that is fulcrumed on a bracket 26 and normally held depressed by aspring 27 In operating the attachment above described, if it be desiredto throw the capital characters into printing position, the operatorpresses his or her left knee against the vertical arm of the lever 12,throwing said lever in the direction of its arrow, which movement of thelever will draw down the lever 16 and shift the capital characters to aprinting po- I sition, leaving both of the operators hands free for theoperation of printing. Then it is desired to space, the operator movesthe lever 13 by pressing his or her right knee against the vertical armof said lever, while if it is desired to throw the figures into printingposition the knee of the operator is pressed against the lever 25, andsaid lever is raised, which movement of the lever will draw down the key20 and in order that the lever 25 may be adjusted to a height such aswill be convenient for the operator we form the bracket 26 with a numberof apertures a, through any one of which the fulcrum-pin of the lever25'1nay be passed, and. we also form the links 2i with a number ofapertures 11, as represented.

From the construction above described it will be"seen that the shiftingof the characters and the spacing may be brought about withoutinterfering with the action of the op erators hands. I I

The attachment employed for shifting the carriage consists of a treadle30, that is hinged to the floorbeneath the stand 11 and normally upheldby a spring 31. This treadle carries a lever arm 32, to which there isconnected acord 33, that passes over a sheave 34, carried by a standard35, that is formed with a jaw 36, adapted to fit over the edge of thestand 11, the lower member 37 of the jaw 36 carrying a set-screw 38, bymeans of which the standard is clamped to position. From the sheave 34the cord 33 extends to a rearwardly-extending arm 39, that is connectedto the carriage tripping-lever 40, the arrangement being such that bydepressing the treadle the cord 33 will be drawn in the direction of itsarrow, and the carriage will be drawn to its starting-point.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. The combination, with a type-writer and itsstand, of a lever pivoted under the table, a link connected with ashifting-key of the type-writer and contracted between its ends to forma narrow passage, a pin projecting from said lever into the link, andmeans for returning the lever and the shifting-key to their normalpositions independently of each other, substantially as set forth;

2. The combination, with a type-writer and its stand, of opposedbell-crank levers pivoted under the tablewith a space between theirvertical members for the operators knees, a lever extending horizontallyacross the space between said levers to be engaged by the up wardmovement of the knee, and connections between said levers and theshifting and spacing keys, respectively, of the type-writer,substantially as set forth.

REUBEN DURRIN. ROSEORANS SHELDON. Witnesses:

H. N. RYAN,

W. S. JACKSON.

